import Vue from 'vue'
import Router from 'vue-router'
import Login from './components/Login.vue'
import Home from './components/Home.vue'


Vue.use(Router)

const router = new Router({
        routes: [
            { path: '/', redirect: '/login' },
            { path: '/login', component: Login },
            { path: '/home', component: Home }
        ]
    })
    //路由导航守卫
router.beforeEach((to, from, next) => {
    // to代表要访问的路径
    // from代表从哪个路径跳转而来
    // next是一个函数，代表接下来要做什么操作，放行还是去往其他的页面
    if (to.path == '/login') return next()
    const tokenStr = window.sessionStorage.getItem('token')
    if (!tokenStr) return next('/login')
    next()
})

export default router